在使用react-native-ffmpeg时，npx pod-install 一直报这个错，根据第三方库的文档中，在ios/Podfile添加了
pod 'react-native-ffmpeg/video', :podspec => '../node_modules/react-native-ffmpeg/react-native-ffmpeg.podspec'
之后还是报了以下的错
[!] CocoaPods could not find compatible versions for pod "react-native-ffmpeg/video": In Podfile: react-native-ffmpeg/video (from ../node_modules/react-native-ffmpeg/react-native-ffmpeg.podspec) Specs satisfying the react-native-ffmpeg/video (from../node_modules/react-native-ffmpeg/react-native-ffmpeg.podspec) dependency were found, but they required a higher minimum deployment target.2020-11-07

我知道这是版本问题，搞半天，后来在react-native-ffmpeg中的react-native-ffmpeg.podspec发现

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原来是ios版本太低了，根据上面中的至少为11.0
在ios/Podfile中我原来的是9.0
改为11.0就可以了

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